39988280

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{347}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 93709440

約数和(自身を除く): 53721160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 67, 86, 134, 172, 215, 268, 335, 344, 347, 430, 536, 670, 694, 860, 1340, 1388, 1720, 1735, 2680, 2776, 2881, 3470, 5762, 6940, 11524, 13880, 14405, 14921, 23048, 23249, 28810, 29842, 46498, 57620, 59684, 74605, 92996, 115240, 116245, 119368, 149210, 185992, 232490, 298420, 464980, 596840, 929960, 999707, 1999414, 3998828, 4998535, 7997656, 9997070, 19994140, 39988280]

約数ペア:

[(1, 39988280), (2, 19994140), (4, 9997070), (5, 7997656), (8, 4998535), (10, 3998828), (20, 1999414), (40, 999707), (43, 929960), (67, 596840), (86, 464980), (134, 298420), (172, 232490), (215, 185992), (268, 149210), (335, 119368), (344, 116245), (347, 115240), (430, 92996), (536, 74605), (670, 59684), (694, 57620), (860, 46498), (1340, 29842), (1388, 28810), (1720, 23249), (1735, 23048), (2680, 14921), (2776, 14405), (2881, 13880), (3470, 11524), (5762, 6940)]